<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .wrapp{
            width: 400px;
            height: 400px;
            background-color: antiquewhite;
            display: flex;
            justify-content: space-between;
           
        }
        .one{
            width: 100px;
            height: 100px;
            background-color: aqua;
        }
        .two{
            width: 100px;
            height: 100px;
            background-color: red;
            align-self:flex-end;
            /* flex-grow :1; */
            flex-shrink:1;
        }
    </style>
</head>
<body>
    <div class="wrapp">
        <div class="one"></div>
        <div class="two"></div>
    </div>
</body>
</html>